Pulling-head for wires, ropes, and cables.



PATENTED OCT. 2, 1906.

, W. D. SCOTT.

PULLING HEAD FOR WIRES, ROPBS, AND GABLES.

APPLICATION FILED MAY 17. 1906.

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WILLIAM D. SCOTT, OF BUFFALO, NEW YORK.

PULLlNG-HEAD FOR WIRES, ROPES, AND CABLES.

Specification of Letters Patent.

Patented Oct. 2, 1906.

Application filed May 17, 1906. Serial No. 317,405.

ggMy invention relates to a device adapted to be readily secured to theend of a wire, rope, or cable for attaching the same to any pulling partand which may be readily disconnected from the wire, rope, or cable.

It will be understood that the uses of my device are not limited to anyparticular purpose or in connection with any particular article to bepulled, it being applicable gener* ally Whenever it is desired to attacha pulling-rope to any cylindrical body for the purpose of dragging thesame along.

The invention, speaking generally, consists in a plurality of metallicfilaments, specifically in the form of ribbons, which are laid spirallyin the form of a cylinder, the several intersections of the ribbonsbeing pivoted together. Proper means for attaching the drag-rope aresecured at one end of the articulated cylinder thus formed to theseveral filaments, so that a strain put upon the dragropes results in astretching or straightening of the filament and a consequent reductionin the diametrical size of the cylinder, whereby the cylinder will becaused to grasp any cylinder-body which may be contained therein at suchtime.

My invention further consists in the con struction, arrangement, andcombination of the several parts of which it is composed, and will behereinafter more fully described and claimed.

Referring to the accompanying drawings, in which corresponding parts aredesignated by corresponding marks of reference, Figure 1 is aperspective view of a pulling-head constructedv in accordance with myinvention. Fig. 2 is a side view of the same.

In forming the pulling-head shown in the annexed drawings I take aplurality of metal ribbons a, preferably of steel and four in number,and twist the same into spirals, half with a right-hand and half with aleft-hand twist. These spiral ribbons are then assembled in such mannerthat they constitute a reticulated cylinder in which a right-hand and aleft-hand ribbon each have one of their ends located on one side of thecylinder, the other right-hand ribbon and the other lefthand ribbonhaving each one of their ends located on the other side of the cylinder.The several ribbons are then riveted in such way that they are free tomove on the rivets b as pivots at each intersecting-point, including anintersecting-point located at or adjacent to the free ends of theribbons terminating on each side of the cylinder, so that one end ofeach of a pair of ribbons is secured together at one end, and the sameribbons are also secured together at the intersecting-point of theiropposite ends, which by preference lies on the opposite side of thecylinder from that on which their first-named ends lie. To each of thepivotal points of the last-named ends of each pair of ribbons is secureda link 19, and

through these two links passes a common end ring 0, to which thepulling-rope is secured.

It is obvious that a pulling strain upon the end ring, with a slightresistance to movement on the part of the reticulated cylinder, willresult in a straightening of the ribbons and a consequent reduction inthe diametrical size of the cylinder formed thereby, whereby increasedfriction between the reticulated cylinder and the cylinder-body to bedrawn and contained therein will be created, and that this last-namedfriction will vary directly with the pulling power, so that thecylindrical body will be the more firmly clamped the greater itsresistance to movement.

It is obvious that while the metallic flat ribbons are hereinspecifically described other forms of metallic filaments may be used,which are appropriately connected at their ends and intersecting-pointsto permit the pivotal movement necessary for their proper action.

Having thus described my invention, what I claim, and desire'to secureby Letters Patent ofthe United States, is-

1. A pulling-head for cylindrical bodies comprising a reticulatednetwork made up of interlaced metallic filaments, the opposite ends ofwhich are connected in pairs, with an attachment device secured to thecorresponding ends of the pairs of filaments, substantially asdescribed.

2. A pulling-head for cylindrical bodies comprising a reticulatedcylinder consisting of a plurality of pairs of metallic ribbons, theends of each pair of ribbons being united together, and the severalribbons being pivotally connected at their intersecting-points,

With the operating rneans attached to the cor- 1 0 responding end of allof the pairs of ribbons, substantially as described.

Signed at Buffalo, New York, this 30th day of March, 1906.

WILLIAM D. SCOTT. Witnesses:

JOHN R. JosLYN, GEORGE J. NOONAN.

